author | Claus Gittinger <cg@exept.de> |
Tue, 07 Nov 2000 14:01:03 +0100 | |
changeset 3365 | a76614b953c7 |
parent 3355 | 2ec13d9b93ca |
child 3405 | 0c6b6fcd819f |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libview' }" |
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SimpleView subclass:#View |
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instanceVariableNames:'model aspectMsg changeMsg menuMsg menuHolder menuPerformer |
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enableChannel foregroundChannel backgroundChannel' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Views-Basic' |
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! |
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||
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!View class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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|
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This software is furnished under a license and may be used |
|
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only in accordance with the terms of that license and with the |
|
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inclusion of the above copyright notice. This software may not |
|
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be provided or otherwise made available to, or used by, any |
|
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other person. No title to or ownership of the software is |
|
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hereby transferred. |
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" |
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! |
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||
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documentation |
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" |
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this class adds provisions for views which show or work on a model. |
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This functionality used to be in View, but has been extracted into SimpleView and |
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this new View class, to take some of the stuff out of views which do not need |
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this functionality (i.e. all views which do only geometry management). |
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Instances of View are seldom used, most views in the system inherit |
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from this class. |
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[Instance variables:] |
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model <nil | any> the model (if any) |
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aspectMsg <nil | Symbol> the aspect; typically |
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dependentViews react on changes |
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of this aspect and update their contents. |
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changeMsg <nil | Symbol> the changeMessage; typically |
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dependentViews send this message to |
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the model to tell it about changes. |
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menuMsg <nil | Symbol> the menuMessage; typically |
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dependentViews send this message to |
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the model to ask for a popup menu. |
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menuHolder <any> who has a menu |
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(default: nil i.e. model has menu) |
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menuPerformer <any> who performs menu actions |
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(default: nil i.e. model has menu) |
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[see also:] |
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StandardSystemView TopView DialogBox |
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WindowGroup |
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Model ValueHolder |
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( introduction to view programming :html: programming/viewintro.html ) |
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[author:] |
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Claus Gittinger |
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" |
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! |
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examples |
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" |
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a subView in a topView: |
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[exBegin] |
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|top v| |
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top := StandardSystemView new. |
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v := View new. |
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v origin:0.25 @ 0.25 corner:0.75 @ 0.75. |
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top addSubView:v. |
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top open |
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[exEnd] |
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the same, a bit more compact: |
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[exBegin] |
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|top v| |
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top := StandardSystemView new. |
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v := View origin:0.25 @ 0.25 corner:0.75 @ 0.75 in:top. |
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top open |
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[exEnd] |
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menuHolder |
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[exBegin] |
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|top mh| |
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mh := (PopUpMenu itemList:#( ('foo' foo) (#'bar' bar)) resources:nil) asValue. |
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top := StandardSystemView extent:200@200. |
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top menuHolder:mh. |
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top open |
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[exEnd] |
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menuHolder |
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[exBegin] |
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|top mh| |
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mh := (PopUpMenu itemList:#( ('foo' foo) (#'bar' bar)) resources:nil) asValue. |
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[ |
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Delay waitForSeconds:5. |
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mh value: (PopUpMenu itemList:#( ('waboo' foo) (#'baz' bar)) resources:nil) |
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] fork. |
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top := StandardSystemView extent:200@200. |
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top menuHolder:mh. |
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top open |
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[exEnd] |
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" |
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! ! |
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!View class methodsFor:'instance creation'! |
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on:aModel aspect:aspectMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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! |
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on:aModel aspect:aspectMsg change:changeMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect and change" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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change:changeMsg |
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! |
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on:aModel aspect:aspectMsg change:changeMsg menu:menuMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect, change and menu" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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change:changeMsg |
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menu:menuMsg |
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! |
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on:aModel aspect:aspectMsg menu:menuMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect and menu" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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menu:menuMsg |
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! ! |
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!View class methodsFor:'defaults'! |
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defaultAspectMessage |
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"subclasses which by default do NOT want to be informed about changed |
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models should redefine this to return nil" |
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^ #value |
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! |
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defaultChangeMessage |
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"subclasses which by default do NOT want to inform the model |
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should redefine this to return nil" |
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^ #value: |
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! |
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defaultMenuMessage |
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"subclasses which by default do NOT want to send menu messages |
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should return nil" |
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^ nil |
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"Created: 3.1.1997 / 01:50:36 / stefan" |
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! ! |
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!View methodsFor:'accessing-bg & border'! |
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allViewBackground:something |
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"set the viewBackground to something, a color, image or form, |
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in myself and recursively in all of my subviews. |
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However, if I have a backgroundChannel, dont change my own bg." |
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backgroundChannel isNil ifTrue:[ |
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^ super allViewBackground:something |
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]. |
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self allSubViewsBackground:something |
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"Modified: / 31.10.2000 / 13:06:57 / bg" |
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! ! |
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!View methodsFor:'accessing-channels'! |
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backgroundChannel |
221 |
"return a valueHolder for background color" |
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^ backgroundChannel |
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"Modified: / 30.3.1999 / 13:49:28 / stefan" |
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"Created: / 30.3.1999 / 13:50:55 / stefan" |
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! |
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backgroundChannel:aValueHolder |
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"set the foregroundChannel - a valueHolder holding a color" |
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|prev| |
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prev := backgroundChannel. |
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backgroundChannel := aValueHolder. |
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self setupChannel:aValueHolder for:nil withOld:prev |
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"Modified: / 31.10.1997 / 14:38:38 / cg" |
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"Created: / 30.3.1999 / 13:48:42 / stefan" |
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! |
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enableChannel |
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"return a valueHolder for enable/disable" |
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^ enableChannel |
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"Created: / 30.3.1999 / 13:46:43 / stefan" |
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! |
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enableChannel:aValueHolder |
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"set the valueHolder, which holds the enable boolean value" |
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252 |
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|prev| |
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254 |
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prev := enableChannel. |
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256 |
enableChannel := aValueHolder. |
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self setupChannel:aValueHolder for:#enableStateChanged withOld:prev |
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"Modified: / 14.11.1997 / 13:52:44 / cg" |
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"Modified: / 30.3.1999 / 13:50:15 / stefan" |
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! |
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262 |
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263 |
foregroundChannel |
|
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"return a valueHolder for foreground color" |
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266 |
^ foregroundChannel |
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"Modified: / 30.3.1999 / 13:49:28 / stefan" |
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269 |
! |
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270 |
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271 |
foregroundChannel:aValueHolder |
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272 |
"set the foregroundChannel - a valueHolder holding a color" |
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273 |
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274 |
|prev| |
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275 |
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276 |
prev := foregroundChannel. |
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foregroundChannel := aValueHolder. |
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self setupChannel:aValueHolder for:nil withOld:prev |
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"Modified: / 31.10.1997 / 14:38:38 / cg" |
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"Modified: / 30.3.1999 / 13:50:08 / stefan" |
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! |
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setVisibilityChannel:aValueHolder |
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285 |
"set the valueHolder, which holds the visible boolean value" |
170 | 286 |
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287 |
visibilityChannel := aValueHolder. |
170 | 288 |
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" |
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290 |
|v h| |
1945 | 291 |
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v := View new. |
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293 |
v visibilityChannel:(h := ValueHolder with:true). |
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294 |
v open. |
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295 |
Delay waitForSeconds:2. |
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296 |
h value:false. |
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297 |
Delay waitForSeconds:2. |
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298 |
h value:true. |
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Delay waitForSeconds:2. |
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300 |
" |
1945 | 301 |
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"Created: / 14.1.1998 / 17:11:15 / stefan" |
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"Modified: / 14.1.1998 / 17:33:40 / stefan" |
170 | 304 |
! ! |
305 |
||
269 | 306 |
!View methodsFor:'accessing-menus'! |
307 |
||
308 |
menuHolder |
|
309 |
"who has the menu ? |
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310 |
If no explicit menuHolder was defined, its the model if I have one. |
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311 |
Otherwise, its the menuHolder (if nonNil) or mySelf. |
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|
312 |
The menuHolder is supposed to return a popUpMenu when asked via the |
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313 |
menuMessage." |
269 | 314 |
|
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|
315 |
menuHolder notNil ifTrue:[^ menuHolder]. |
269 | 316 |
model notNil ifTrue:[^ model]. |
317 |
^ self |
|
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318 |
|
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319 |
"Modified: 23.12.1996 / 13:56:55 / cg" |
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320 |
! |
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321 |
|
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322 |
menuHolder:anObject |
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323 |
"change the one that provides the menu (via menuMsg)." |
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324 |
|
2134 | 325 |
menuHolder := anObject. |
326 |
menuMsg isNil ifTrue:[menuMsg := #value]. |
|
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327 |
|
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|
328 |
"Created: 23.12.1996 / 13:54:33 / cg" |
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329 |
! |
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|
330 |
|
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|
331 |
menuMessage |
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332 |
"Return the symbol sent to the model to aquire the menu" |
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|
333 |
|
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|
334 |
^ menuMsg |
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335 |
! |
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|
336 |
|
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|
337 |
menuMessage:aSymbol |
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338 |
"ST-80 style menus: If a views menuSymbol is nonNil, it |
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339 |
will send it to its model when the middleButton is pressed. |
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340 |
That method should return nil or the menu to be shown. |
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341 |
This is useful for very dynamic menus, where it does not |
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342 |
make sense to define an initial menu. |
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343 |
This is the same as #menu: which was added for ST-80 compatibility." |
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|
344 |
|
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345 |
menuMsg := aSymbol |
269 | 346 |
! |
347 |
||
348 |
menuPerformer |
|
349 |
"who should perform the menu actions ? |
|
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350 |
If no menuPerformer was defined, its the model if I have one. |
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351 |
Otherwise its the menuPerformer (if nonNil), or myself. |
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352 |
The menuPerformer get messages from the menu" |
269 | 353 |
|
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354 |
menuPerformer notNil ifTrue:[^ menuPerformer]. |
269 | 355 |
model notNil ifTrue:[^ model]. |
356 |
^ self |
|
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|
357 |
|
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|
358 |
"Modified: 23.12.1996 / 13:57:18 / cg" |
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|
359 |
! |
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|
360 |
|
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|
361 |
menuPerformer:anObject |
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|
362 |
"change the one that does the menu actions. |
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|
363 |
See the comment in SimpleView>>activateMenu on who gets the menus |
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|
364 |
message." |
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|
365 |
|
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|
366 |
menuPerformer := anObject |
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|
367 |
|
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|
368 |
" |
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|
369 |
|top textV plug| |
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|
370 |
|
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|
371 |
plug := Plug new. |
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|
372 |
plug respondTo:#textMenu |
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|
373 |
with:[ |m| |
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|
374 |
m := PopUpMenu |
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|
375 |
labels:#('copy' 'foo' '-' 'others') |
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|
376 |
selectors:#(copySelection foo nil others). |
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|
377 |
m subMenuAt:#others |
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|
378 |
put:(PopUpMenu |
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|
379 |
labels:#('bar' 'goto') |
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|
380 |
selectors:#(bar gotoLine)) |
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|
381 |
]. |
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|
382 |
|
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|
383 |
top := StandardSystemView new. |
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|
384 |
top extent:300@300. |
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|
385 |
|
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|
386 |
textV := TextView origin:0.0@0.0 corner:1.0@1.0 in:top. |
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|
387 |
textV menuHolder:plug; menuMessage:#textMenu; menuPerformer:plug. |
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|
388 |
textV contents:'hello world'. |
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|
389 |
top open. |
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|
390 |
" |
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changeset
|
391 |
|
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|
392 |
"Created: 23.12.1996 / 13:57:28 / cg" |
2166
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changeset
|
393 |
! |
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changeset
|
394 |
|
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changeset
|
395 |
performer:anObject |
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changeset
|
396 |
"same as #menuPerformer - ST80 compatibility" |
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changeset
|
397 |
|
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changeset
|
398 |
self menuPerformer:anObject |
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changeset
|
399 |
|
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|
400 |
"Created: / 6.7.1998 / 13:38:32 / cg" |
269 | 401 |
! ! |
402 |
||
118 | 403 |
!View methodsFor:'accessing-mvc'! |
404 |
||
269 | 405 |
addModelInterfaceTo:aDictionary |
406 |
"this adds entries for all messages sent to my model |
|
407 |
to aDictionary" |
|
408 |
||
409 |
aDictionary at:#aspectMessage put:aspectMsg. |
|
410 |
aDictionary at:#changeMessage put:changeMsg. |
|
411 |
aDictionary at:#menuMessage put:menuMsg. |
|
412 |
||
413 |
" |
|
414 |
Button new modelInterface |
|
415 |
" |
|
416 |
! |
|
135 | 417 |
|
269 | 418 |
aspect |
419 |
"Return the aspect used with changes from/to the model" |
|
420 |
||
421 |
^ aspectMsg |
|
422 |
! |
|
423 |
||
424 |
aspectMessage |
|
425 |
"Return the aspect used with changes from/to the model" |
|
426 |
||
427 |
^ aspectMsg |
|
428 |
! |
|
429 |
||
430 |
aspectMessage:aspectSymbol |
|
431 |
"ST-80 style updating: If a views aspectSymbol is nonNil, |
|
432 |
it will respond to changes of this aspect from the model." |
|
433 |
||
434 |
aspectMsg := aspectSymbol |
|
135 | 435 |
! |
436 |
||
269 | 437 |
change:changeSymbol |
438 |
"ST-80 style change notification: If a views changeSymbol is nonNil, |
|
439 |
it will send it to its model when something changes. |
|
440 |
Alias for changeMessage: for ST-80 compatibility." |
|
441 |
||
442 |
self changeMessage:changeSymbol |
|
443 |
! |
|
444 |
||
445 |
changeMessage |
|
446 |
"Return the symbol sent to the model if nonNil when something changes." |
|
135 | 447 |
|
269 | 448 |
^ changeMsg |
449 |
! |
|
450 |
||
451 |
changeMessage:aSymbol |
|
452 |
"ST-80 style change notification: If a views changeSymbol is nonNil, |
|
453 |
it will send it to its model when something changes. |
|
454 |
This is the same as change: which was added for ST-80 compatibility." |
|
455 |
||
456 |
changeMsg := aSymbol |
|
457 |
! |
|
458 |
||
459 |
controller:aController |
|
460 |
"set the controller" |
|
118 | 461 |
|
269 | 462 |
super controller:aController. |
463 |
controller notNil ifTrue:[ |
|
464 |
controller model:model |
|
0 | 465 |
] |
466 |
! |
|
467 |
||
269 | 468 |
menu:menuSymbol |
469 |
"ST-80 style menus: If a views menuSymbol is nonNil, it |
|
470 |
will send it to its model when the middleButton is pressed. |
|
471 |
That method should return nil or the menu to be shown. |
|
472 |
This is useful for very dynamic menus, where it does not |
|
473 |
make sense to define an initial menu. |
|
474 |
Alias for #menuMessage:, for ST-80 compatibility." |
|
475 |
||
476 |
menuMsg := menuSymbol |
|
477 |
! |
|
478 |
||
118 | 479 |
model |
480 |
"return the model, for non-MVC views, |
|
481 |
this is nil or the receiver" |
|
482 |
||
483 |
^ model |
|
484 |
! |
|
485 |
||
486 |
model:aModel |
|
1151
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Move rest of menuHolder/menuPerformer stuff to view.
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changeset
|
487 |
"Set the model. |
1149
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Set meuPerformer also, when model is set.
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diff
changeset
|
488 |
Here, if I am my own menuPerformer/menuHolder, |
1151
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Move rest of menuHolder/menuPerformer stuff to view.
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diff
changeset
|
489 |
set the menuHolder and menuPerformer to the model. |
1a3682212ea9
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parents:
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diff
changeset
|
490 |
This is a compatibility kludge, |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
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parents:
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diff
changeset
|
491 |
since typically, ST-80 code expects the model to provide a menu |
1151
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Move rest of menuHolder/menuPerformer stuff to view.
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changeset
|
492 |
and perform it. If the model does not support a menu message, |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
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diff
changeset
|
493 |
it will be forwarded to the view. |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
|
494 |
Those apps which want the view to provide the (default) menu have to reset |
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
|
495 |
this by sending #menuHolder: message (again)" |
118 | 496 |
|
497 |
model notNil ifTrue:[ |
|
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
|
498 |
model removeDependent:self |
89 | 499 |
]. |
118 | 500 |
model := aModel. |
2524
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
501 |
|
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
502 |
"/ ST80 kludge start |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
503 |
(menuPerformer == self |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
504 |
and:[menuHolder == self |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
505 |
and:[model isValueModel not]]) ifTrue:[ |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
506 |
menuPerformer := menuHolder := model |
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
507 |
]. |
2524
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
508 |
"/ ST80 kludge end. |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
509 |
|
118 | 510 |
model notNil ifTrue:[ |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
511 |
aModel addDependent:self |
118 | 512 |
]. |
513 |
controller notNil ifTrue:[ |
|
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
514 |
controller model:aModel |
1395
7218ca27d752
moved class>.model to superClass.
Claus Gittinger <cg@exept.de>
parents:
1152
diff
changeset
|
515 |
]. |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
516 |
|
1395
7218ca27d752
moved class>.model to superClass.
Claus Gittinger <cg@exept.de>
parents:
1152
diff
changeset
|
517 |
"Modified: 28.2.1997 / 19:23:06 / cg" |
118 | 518 |
! |
519 |
||
140 | 520 |
modelInterface |
521 |
"this returns a dictionary of messages sent to my model. |
|
522 |
It can be used for builders and wrappers to get information |
|
523 |
about the messages sent to my model. |
|
524 |
The returned dictionary contains one entry for each get-Msg, |
|
525 |
and the recevier will implement corresponding messages (with a colon) |
|
526 |
to set the message symbol." |
|
527 |
||
528 |
|d| |
|
529 |
||
530 |
d := IdentityDictionary new. |
|
531 |
self addModelInterfaceTo:d. |
|
532 |
^ d |
|
533 |
||
534 |
" |
|
535 |
Button new modelInterface |
|
536 |
Label new modelInterface |
|
537 |
" |
|
538 |
||
539 |
" |
|
540 |
does the view support setting the menuMessage ? |
|
541 |
||
542 |
SelectionInListView new modelInterface includesKey:#menuMessage |
|
543 |
" |
|
544 |
||
545 |
" |
|
546 |
turn off all interaction to the model: |
|
547 |
||
548 |
|m v if| |
|
549 |
||
550 |
m := SelectionInList new. |
|
551 |
m list:#('one' 'two' 'tree' 'four') asValue. |
|
552 |
m selection:1 asValue. |
|
553 |
v := SelectionInListView on:m. |
|
554 |
v open. |
|
555 |
v inspect. |
|
556 |
||
557 |
if := v modelInterface. |
|
558 |
if inspect. |
|
559 |
||
560 |
if keysAndValuesDo:[:what :msg | |
|
561 |
v perform:(what , ':') asSymbol with:nil. |
|
562 |
]. |
|
563 |
" |
|
269 | 564 |
! |
565 |
||
566 |
on:aModel aspect:aspectSymbol |
|
567 |
"ST-80 compatibility: set model and aspect |
|
568 |
messages - needs a view which uses these" |
|
569 |
||
570 |
aspectMsg := aspectSymbol. |
|
571 |
self model:aModel. |
|
572 |
! |
|
573 |
||
574 |
on:aModel aspect:aspectSymbol change:changeSymbol |
|
575 |
"ST-80 compatibility: set model, aspect and change |
|
576 |
messages - needs a view which uses these" |
|
577 |
||
578 |
aspectMsg := aspectSymbol. |
|
579 |
changeMsg := changeSymbol. |
|
580 |
self model:aModel. |
|
581 |
! |
|
582 |
||
583 |
on:aModel aspect:aspectSymbol change:changeSymbol menu:menuSymbol |
|
584 |
"ST-80 compatibility: set model, aspect, change and menu |
|
585 |
messages - needs a view which uses these" |
|
586 |
||
587 |
aspectMsg := aspectSymbol. |
|
588 |
changeMsg := changeSymbol. |
|
589 |
menuMsg := menuSymbol. |
|
590 |
self model:aModel. |
|
591 |
! |
|
592 |
||
593 |
on:aModel aspect:aspectSymbol menu:menuSymbol |
|
594 |
"ST-80 compatibility: set model, aspect and menu |
|
595 |
messages - needs a view which uses these" |
|
596 |
||
597 |
aspectMsg := aspectSymbol. |
|
598 |
menuMsg := menuSymbol. |
|
599 |
self model:aModel. |
|
600 |
! |
|
601 |
||
602 |
sendChangeMessage:aSelector with:arg |
|
603 |
"tell the model about a change" |
|
604 |
||
605 |
|n selector| |
|
606 |
||
607 |
"/ |
|
608 |
"/ MVC way of doing it: |
|
609 |
"/ if the model is a block, evaluate it, optionally |
|
610 |
"/ passing the arg and the receiver as arguments. |
|
611 |
"/ |
|
612 |
"/ otherwise (the common case) send it a changeMsg message |
|
613 |
"/ also with arg and the receiver (depending on the number of arguments |
|
614 |
"/ as defined by the selector). |
|
615 |
"/ |
|
616 |
(model notNil and:[aSelector notNil]) ifTrue:[ |
|
3170 | 617 |
n := aSelector numArgs. |
618 |
model isBlock ifTrue:[ |
|
619 |
n := model numArgs. |
|
620 |
n == 0 ifTrue:[ |
|
621 |
selector := #value |
|
622 |
] ifFalse:[ |
|
623 |
n == 1 ifTrue:[ |
|
624 |
selector := #value: |
|
625 |
] ifFalse:[ |
|
626 |
selector := #value:value: |
|
627 |
] |
|
628 |
] |
|
629 |
] ifFalse:[ |
|
630 |
selector := aSelector |
|
631 |
]. |
|
632 |
n == 0 ifTrue:[ |
|
633 |
model perform:selector |
|
634 |
] ifFalse:[ |
|
635 |
selector == #value: ifTrue:[ |
|
636 |
"/ must take care, if model is == to the selection-collection |
|
637 |
"/ in this case, we must force a change on the model |
|
638 |
"/ (valueHolder would not send a change in the == case) |
|
639 |
"/ Q: is this a good idea, or should it be done |
|
640 |
"/ at the invoking side |
|
641 |
"/ model isValueModel ifTrue:[ |
|
642 |
"/ model value == arg ifTrue:[ |
|
643 |
"/ model setValue:nil. |
|
644 |
"/ ] |
|
645 |
"/ ]. |
|
646 |
model value:arg |
|
647 |
] ifFalse:[ |
|
648 |
n == 1 ifTrue:[ |
|
649 |
model perform:selector with:arg |
|
650 |
] ifFalse:[ |
|
651 |
model perform:selector with:arg with:self |
|
652 |
] |
|
653 |
] |
|
654 |
] |
|
269 | 655 |
] |
656 |
! |
|
657 |
||
658 |
sendChangeMessageWith:arg |
|
659 |
"tell the model about a change" |
|
660 |
||
661 |
self sendChangeMessage:changeMsg with:arg |
|
72 | 662 |
! ! |
663 |
||
2548 | 664 |
!View methodsFor:'change & update'! |
665 |
||
666 |
update:something with:aParameter from:changedObject |
|
667 |
||
668 |
changedObject == backgroundChannel ifTrue:[ |
|
669 |
self backgroundColor:(backgroundChannel value). |
|
670 |
^ self |
|
671 |
]. |
|
672 |
changedObject == foregroundChannel ifTrue:[ |
|
673 |
self foregroundColor:(foregroundChannel value). |
|
674 |
^ self |
|
675 |
]. |
|
676 |
super update:something with:aParameter from:changedObject |
|
677 |
||
678 |
"Created: / 14.1.1998 / 17:10:11 / stefan" |
|
679 |
"Modified: / 30.3.1999 / 13:52:31 / stefan" |
|
680 |
! ! |
|
681 |
||
269 | 682 |
!View methodsFor:'drawing'! |
118 | 683 |
|
269 | 684 |
redraw |
685 |
"redraw myself |
|
686 |
if there is a model, this one shall redraw itself, |
|
687 |
otherwise we cannot do much here - has to be redefined in subclasses" |
|
118 | 688 |
|
269 | 689 |
model notNil ifTrue:[ |
690 |
model update:self |
|
691 |
] |
|
118 | 692 |
! ! |
693 |
||
2548 | 694 |
!View methodsFor:'event handling'! |
695 |
||
2556
27e9e1cc8cb3
renambe #enableStateChange and #visibilityStateChange
Claus Gittinger <cg@exept.de>
parents:
2548
diff
changeset
|
696 |
enableStateChanged |
2548 | 697 |
"called to update enable/disable state" |
698 |
||
699 |
self enabled:(enableChannel value) |
|
700 |
||
701 |
"Modified: / 30.3.1999 / 16:07:08 / stefan" |
|
702 |
! ! |
|
703 |
||
3095 | 704 |
!View methodsFor:'focus handling'! |
705 |
||
706 |
wantsFocusWithButtonPress |
|
707 |
"views which do not like to take the keyboard focus |
|
708 |
with buttonPress can do so by redefining this |
|
709 |
to return false" |
|
710 |
||
711 |
(self class == View) ifTrue:[ |
|
712 |
"/ a pure filler/geometric layout view |
|
713 |
^ false |
|
714 |
]. |
|
715 |
^ super wantsFocusWithButtonPress |
|
716 |
||
717 |
||
718 |
! ! |
|
719 |
||
3170 | 720 |
!View methodsFor:'initialization & release'! |
2573 | 721 |
|
722 |
destroy |
|
723 |
"unrealize & destroy - make me invisible, destroy subviews then |
|
724 |
make me unknown to the device" |
|
725 |
||
726 |
model notNil ifTrue:[ |
|
3204
ed184af034d3
Remove dependents on various channels when destroying.
Stefan Vogel <sv@exept.de>
parents:
3170
diff
changeset
|
727 |
model removeDependent:self. |
ed184af034d3
Remove dependents on various channels when destroying.
Stefan Vogel <sv@exept.de>
parents:
3170
diff
changeset
|
728 |
model := nil. |
2573 | 729 |
]. |
3204
ed184af034d3
Remove dependents on various channels when destroying.
Stefan Vogel <sv@exept.de>
parents:
3170
diff
changeset
|
730 |
visibilityChannel notNil ifTrue:[visibilityChannel removeDependent:self. visibilityChannel := nil]. |
ed184af034d3
Remove dependents on various channels when destroying.
Stefan Vogel <sv@exept.de>
parents:
3170
diff
changeset
|
731 |
enableChannel notNil ifTrue:[enableChannel removeDependent:self. enableChannel := nil]. |
ed184af034d3
Remove dependents on various channels when destroying.
Stefan Vogel <sv@exept.de>
parents:
3170
diff
changeset
|
732 |
foregroundChannel notNil ifTrue:[foregroundChannel removeDependent:self. foregroundChannel := nil]. |
ed184af034d3
Remove dependents on various channels when destroying.
Stefan Vogel <sv@exept.de>
parents:
3170
diff
changeset
|
733 |
backgroundChannel notNil ifTrue:[backgroundChannel removeDependent:self. backgroundChannel := nil]. |
2573 | 734 |
super destroy. |
735 |
! |
|
118 | 736 |
|
737 |
initialize |
|
738 |
super initialize. |
|
140 | 739 |
|
740 |
aspectMsg := self class defaultAspectMessage. |
|
741 |
changeMsg := self class defaultChangeMessage. |
|
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
742 |
menuMsg := self class defaultMenuMessage. |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
743 |
|
135 | 744 |
model notNil ifTrue:[ |
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
745 |
controller notNil ifTrue:[ |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
746 |
controller model:model |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
747 |
] |
81 | 748 |
]. |
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
749 |
|
1152
21c666e130dd
menuHolder/menuPerformer stuff.
Stefan Vogel <sv@exept.de>
parents:
1151
diff
changeset
|
750 |
"Modified: 3.1.1997 / 02:11:15 / stefan" |
118 | 751 |
! ! |
752 |
||
269 | 753 |
!View class methodsFor:'documentation'! |
754 |
||
755 |
version |
|
3365
a76614b953c7
lifted visibilityChannel stuff to superclass
Claus Gittinger <cg@exept.de>
parents:
3355
diff
changeset
|
756 |
^ '$Header: /cvs/stx/stx/libview/View.st,v 1.72 2000-11-07 13:01:03 cg Exp $' |
269 | 757 |
! ! |